Telephone headset hearing aid



FIG. 1 is a front, partial top and right side perspective view of a telephone handset hearing aid showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a front elevational view thereof;

FIG. 5 is a bottom plan view thereof; and

FIGS. 6 and 7 are respectively right and left side elevational views thereof. 

The ornamental design for a telephone headset hearing aid, substantially as shown and described. 